US3847417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical fitting
Assignee: ABB Installation Products Inc
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Filing: 1973-06-22
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Granted: 1974-11-12
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Expires: 1993-06-22
Abstract
Abstract An electrical fitting for connecting metallic conduit or armored cable to an outlet box or the like comprising a smoothly throated annular ring attached by a relatively narrow web portion to one end of an externally threaded hollow tubular body member which, in one embodiment, includes tab means attached thereto which engages a portion of the periphery of the annular ring at a point selectively spaced from the interconnecting web portion to maintain the ring in generally coaxial alignment with the body member. In another embodiment, the tab means is attached to the annular ring and engages the adjacent end of the body member. The smooth interior surface of the annular ring flares outwardly remote from the body member to provide a smooth exit for conductors drawn therethrough while additionally providing a convenient stop means for the conduit or the metallic sheath encompassing the conductors. In one embodiment the fitting may be stamped from a single piece of flat stock and thereafter roll formed to provide the desired configuration.
Inventors
- 👤 J Bawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:19
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/06; H02G3/0616
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
235 words
An electrical fitting comprising: a generally hollow tubular body member having a given inner diameter, a first end, a second end, and an externally threaded portion extending from said body member first end a given length towards said body member second end; an annular ring having a given inner diameter less than said inner diameter of said body member and having a smooth tapered interior surface having a first portion adjacent said body member first end, said first portion having a convex form converging towards the axis of said annular ring and away from said body member first end, said interior surface having a second portion contiguous with said first portion and flaring outwardly adjacent the end of said annular ring remote from said body member, said annular ring being selectively axially spaced from and disposed generally adjacent said body member first end in coaxial alignment therewith, said annular ring being connected to said body member by a narrow web portion extending Between said body member first end and the periphery of said annular ring; said body member, annular ring and web portion being formed integrally from the same material, and at least one tab means connecting said body member first end to the periphery of said annular ring at a point selectively spaced from said web portion to maintain said annular ring in a given position with respect to said body member first end.
Claim 2
Dependent Claim
235 words
An electrical fitting comprising: a generally hollow tubular body member having a given inner diameter, a first end, a second end, and an externally threaded portion extending from said body member first end a given length towards said body member second end; an annular ring having a given inner diameter less than said inner diameter of said body member and having a smooth tapered interior surface having a first portion adjacent said body member first end, said first portion having a convex form converging towards the axis of said annular ring and away from said body member first end, said interior surface having a second portion contiguous with said first portion and flaring outwardly adjacent the end of said annular ring remote from said body member, said annular ring being selectively axially spaced from and disposed generally adjacent said body member first end in coaxial alignment therewith, said annular ring being connected to said body member by a narrow web portion extending Between said body member first end and the periphery of said annular ring; said body member, annular ring and web portion being formed integrally from the same material, and at least one tab means connecting said body member first end to the periphery of said annular ring at a point selectively spaced from said web portion to maintain said annular ring in a given position with respect to said body member first end.
Claim 3
Dependent Claim
19 words
An electrical fitting as defined in claim 1 wherein said tab means is formed integrally with said body member.
Claim 4
Dependent Claim
33 words
An electrical fitting as defined in claim 2 wherein the periphery of said annular ring has a groove therein, and said tab means comprises a selectively formed free end engaged within said groove.
Claim 5
Dependent Claim
19 words
An electrical fitting as defined in claim 3 further comprising two tab means formed integrally with said body member.
Claim 6
Dependent Claim
26 words
An electrical fitting as defined in claim 4 wherein said body member and said annular ring are formed integrally from a single piece of flat stock.
Claim 7
Dependent Claim
29 words
An electrical fitting as defined in claim 1 wherein said body member further comprises a shoulder portion disposed about the periphery thereof generally adjacent said body member second end.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |